Dear Ms. Humphries,
Your web page at
http://spaceflight.nasa.gov/station/assembly/elements/mss/subsystems.html
shows the speed of operation for Station Assembly to be 2 cm/s. As I
recall from the MDRobotics pages, it is actually 6 cm/s (which would
equate with the number of inches shown).
Other things that ought to be corrected are:
1. The solidus symbol (/) should not be used with spelled out unit
names; instead use "per". Better yet, to make the material more
understandable internationally, use symbols as I did above. (Refer to
NIST Special Publications 811 and 814.)
2. One of your conversion values (into inches) starts a number with a
decimal point. A zero should precede the decimal point in cases such as
this. Or follow my second suggestion in "4", below.
3. The term "weight" is used where "mass" is correct. This would be
acceptable in commerce or casual use, but in technical documents such
as this the use of "weight" should be reserved to signify
(gravitational) force.
4. Your conversions of SI values to ifp values fail to maintain the
appropriate number of significant figures. Even better than correcting
this would of course would be listing the SI values only. Americans are
now smart enough to deal with metric units.
Overall, though, I would like to compliment you on your use of SI in
primary position on this page. Could you possibly get NASA's Public
Affairs Offices to do likewise on press releases? NASA PAOs seem like
luddites by comparison to this page and in fact by comparison to the
real world. You may pass this comment to them.
sincerely,
James R. Frysinger
--
James R. Frysinger University/College of Charleston
10 Captiva Row Dept. of Physics and Astronomy
Charleston, SC 29407 66 George Street
843.225.0805 Charleston, SC 29424
http://www.cofc.edu/~frysingj [EMAIL PROTECTED]
Cert. Adv. Metrication Specialist 843.953.7644
